Dormer A777 HSCo Heavy-Duty Jobber Drill Bit 9mm, Cobalt Steel
Professional-grade Dormer A777 cobalt steel drill bit (9mm) for aerospace & high-tensile materials. 135° split point design.
The Dormer A777 HSCo Heavy-Duty Jobber Drill Bit is engineered for professional use in demanding applications. Made from high-performance cobalt steel (HSCo), this drill bit features a 135° split point, ideal for drilling tougher materials where greater heat is generated, such as in the aerospace industry. Its heavy-duty construction ensures durability and precision even under extreme conditions.
Key Features
- Material: HSCo Cobalt steel for superior strength and heat resistance
- Flute Geometry: Standard helix, right-hand spiral, thick web
- Point Angles:
- 0.30 mm - 0.95 mm: 118° Conical point
- 1.00 mm - 1.40 mm: 135° 4-facet point
- 1.50 mm and above: 135° split point (NAS 907 Aerospace Specification type P3 Point)
- Surface Treatment: Bronze for reduced friction and extended tool life
Specifications
- Tip Diameter: 9.0 mm
- Working Length: 81 mm
- Overall Length: 125 mm
Certified to DIN 338 RN, BS328, and ISO 235 standards, the Dormer A777 offers reliable performance for professionals working with high-tensile materials.
- Aerospace industry applications
- Drilling high-tensile materials
- Heavy-duty metalworking
- Material: HSCo Cobalt steel
- Flute Geometry: Standard Helix, Right-hand spiral, Thick Web
- Point Angle: Varies by size (see description for details)
- Surface Treatment: Bronze
- Tip Diameter: 9.0 mm
- Working Length: 81 mm
- Overall Length: 125 mm
- Weight: 42 g
- Standards: DIN 338 RN, BS328, ISO 235
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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